Note, the CDC recommends the use of the WHO charts for babies and infants from birth to two years of age. This app uses WHO tables and data for calculations.

This calculator provides your baby's weight percentile based on length. The percentile shows how your infant's weight compares to other infants of the same length. The percentile tells you what percentage of babies weigh less than your baby. For example out of a sample of 100 babies, a percentile value of 40 percent means your baby weighs more than 40 babies and weighs less than the other 60 babies.

A percentile of 50% represents the average or mean weight. A value below 50 percent means a baby weighs less than the average. A value greater than 50 percent means a baby is above average. This does not mean your baby is overweight or underweight. A doctor or physician should be consulted to determine weight status.

This calculator provides your baby's weight percentile based on length. The percentile shows how your infant's weight compares to other infants of the same length. The percentile tells you what percentage of babies weigh less than your baby. For example out of a sample of 100 babies, a percentile value of 40 percent means your baby weighs more than 40 babies and weighs less than the other 60 babies.

A percentile of 50% represents the average or mean weight. A value below 50 percent means a baby weighs less than the average. A value greater than 50 percent means a baby is above average. This does not mean your baby is overweight or underweight. A doctor or physician should be consulted to determine weight status.

- Note, this calculator uses the World Health Organization (WHO) infant charts for 0-2 year olds
- Enter Weight
- Enter Length

- Percentile - The weight percentile of the child.
- Length - The length of the child
- Weight - The mass of the child in metric and standard units.
- Graph Plot - Weight versus age graph with 5, 10, 25, 50, 75, 95 and calculated percentile lines.

"The WHO Child Growth Standards". The World Health Organization. https://www.who.int/toolkits/child-growth-standards/standards.

The United States Center for Disease Control (CDC) recommends using the World Health Organization (WHO) charts for the first two year of life (0 to 2 years). After two years, it is recommended to return to the CDC charts.

Weight-Age (WHO 0-2 years)
Length-Age (WHO 0-2 years)
Weight-Length (WHO 0-2 years)
Head Circumference-Age (WHO 0-2 years)

Weight-Age (CDC 0-3 years)
Length-Age (CDC 0-3 years)
Weight-Length (CDC 0-3 years)
Head Circumference-Age (CDC 0-3 years)
Weight-Age (CDC 2-20 Years)
Stature-Age (CDC 2-20 Years)
Weight-Stature (CDC 2-20 Years)

Weight-Age (WHO 0-5 years)
Length-Age (WHO 0-2 years)
Height-Age (WHO 2-5 years)
Weight-Length (WHO 0-2 years)
Weight-Height (WHO 2-5 years)
Head Circumference-Age (WHO 0-5 years)

Weight-Age (China 0-18 years)
Length-Age (China 0-3 years)
Height-Age (China 3-18 years)
Head Circumference-Age (China 0-6 years)
Weight-Length (China 0-3 years)
Weight-Height (China 3-18 years)

Weight-Age (23-41 Gestational Weeks)
Length-Age (23-41 Gestational Weeks)
Head Circumference-Age (23-41 Gestational)

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Use this calculator at your own risk. This calculator may or may not be accurate or reliable. By using this calculator you acknowledge any reliance on this calculator shall be at your sole risk.

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Technical Tools, Specifications, How to Guides, Training, Applications, Examples, Tutorials, Reviews, Answers, Test Review Resources, Analysis, Homework Solutions, Help, Data and Information for Engineers, Technicians, Teachers, Tutors, Researchers, K-12 Education, College and High School Students, Science Fair Projects and Scientists